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| Number | Title | Issue Date |
| 8348233 | Butterfly valve A butterfly valve comprises a valve body, a seat ring mounted on a flow passage of the valve body, a disc rotatably mounted to the valve body and configured to open and close the flow passage by being attached to the seat ring; and a driving device configured to lin... | 01/08/2013 |
| 7424855 | Slide arrangement A slide arrangement for blocking or closing off a channel disposed between a coal pulverizer and coal dust burners, and conveying a gas having a high proportion of coal dust. The slide arrangement includes a housing disposed in the channel wall and a shroud or steel... | 09/16/2008 |
| 7347406 | Shut-off valve and method of shutting off opening of vacuum chamber A shut-off valve disposed between openings formed to a vacuum chamber includes a casing, a valve body disposed inside the casing and having a shaft rotating around a central axis of the valve body, a drive unit for driving the valve body to rotate the shaft, and an ... | 03/25/2008 |
| 7334771 | Device for locking and/or sealing a conduit The invention relates to a blocking apparatus for blocking and/or sealing off a line for transporting—preferably hot—media, in particular dust-laden gases, preferably for blocking and/or sealing off a line for transporting hot gases which may be laden with solid... | 02/26/2008 |
| 7281700 | Gate valve apparatus for vacuum processing system A gate valve apparatus includes a valve body to open and close a target object transfer port in a vacuum processing system. The valve body is reciprocated in a first direction relative to the transfer port. A support rod is connected to the valve body and extends in... | 10/16/2007 |
| 7204474 | High-pressure plug valve A plug valve has a valve body, a cage fitted within the valve body and a rotatable plug housed within a cylindrical cavity in the cage, for controlling fluid flow through the valve. The cage has first and second opposed flat side surfaces, each side surface has a po... | 04/17/2007 |
| 7156369 | Valve control device The device (1) comprises a support structure (2) in which at least a first opening (8, 9) is defined, a shutter (13) which is mounted for piloting in that structure (2) and which is adapted to take up a least a first and a second a... | 01/02/2007 |
| 6978977 | Dual lift system Valve and valve lift system suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. In a preferred embodiment, the valve is sea... | 12/27/2005 |
| 6935613 | Compact integrated flanged isolator ball valve The present invention provides a flanged ball valve device which can be connected, as an integrated compact unit, to a pump at the valve flange end of the device by means of an integral flange and to various types of piping systems at the pipe end of the device by m... | 08/30/2005 |
| 6783111 | Dual lift system Valve and valve lift system suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. In a preferred embodiment, the valve is sea... | 08/31/2004 |
| 6367771 | Butterfly valve with offset bearings The device concerns a device for adjusting the relative distance or position between a check valve and the base on which it rests when it is closed. Said device consists of a valve body (1), a valve shaft (5), a check valve (5) and two bearings (2 and 3) ... | 04/09/2002 |
| 6308931 | Flow control valve for cooling tower A lightweight flow control valve for use in cooling towers is provided. The valve includes a lightweight, thin-walled valve body having a flow bore, an inlet port, and an outlet port. The outlet port is disposed in a substantially perpendicular relationsh... | 10/30/2001 |
| 5769392 | Water flowrate control device An improved hydraulic valve comprising a housing having a first coupling end and a second coupling end is provided. The housing includes a receiving recess having an opening atop. The lower section is provided with a cone-shape wall. The inner wall of the... | 06/23/1998 |
| 5755427 | Self adjusting ball valve assembly A self adjusting ball valve assembly having a ball valve body, a shaft assembly or shaft mounted to the ball valve body, a spherical segment carried by the shaft, and elements for adjusting the position of the shaft. The ball valve body has a port for flu... | 05/26/1998 |
| 5746417 | Adjustable ball valve An adjustable ball valve assembly having a vertically tapered chamber and an adjustment mechanism is provided. The adjustable ball valve includes a vertically tapered chamber, a ball disposed within said chamber, a valve stem connected to said ball, seat ... | 05/05/1998 |
| 5609100 | Face valve apparatus for continuous motion can decorator Face valve apparatus having a plurality of valve stations each of which includes a replaceable pad that is behind and in contact with a planar face of a continuously moving valve section having a plurality of inlet ports in a circular array about a rotati... | 03/11/1997 |
| 5549275 | Valve with adjustably pressurized sealing gaskets A valve mechanism for installation in a pipe line for controlling the movement of a flowable material therein which comprises a central body section with end sections connected thereto and forming therewith a valve stopper chamber, the end sections each h... | 08/27/1996 |
| 5542644 | Plug-valve having a plug assembly with retractible seals that can be removed without leakage An improved plug type valve of the type having seat and reseat retractable seals, the plug assembly having a tapered faceted cylindrical plug with a waterway therethrough. A first pair of shut-off slips is positioned on the plug for axial movement, relati... | 08/06/1996 |
| 5417404 | Geared ball valve This invention relates to ball valves. One problem with conventional ball valves is that opening and closing the valve causes the valve seal to scrape across the valve seat. This reduces the life of the seal. This scraping problem can be eliminated by ret... | 05/23/1995 |
| 5397100 | Flow refrigeration valve A valve, such as a compressor or line service valve, for use in refrigeration or air conditioning fluid circuits having an improved flow for improved energy efficiency is disclosed. The valve incorporates a rotary ball member with a 90° fluid passage dia... | 03/14/1995 |
| 5308039 | Ball valve A ball valve having a main body portion with a throughbore and a rotatable ball valve closing off the throughbore. The ball is of resilient plastic and is comprised of a pair of interconnected sides defining a slot therethrough. The valve body portion has... | 05/03/1994 |
| 5265846 | Valve having mechanical closure assist A mechanical closure assist is provided for a valve having a valve casing with a wall and an internal surface defining a valve seat. A disc is pivotable within the casing from an open position to a closed position. The disc defines front and back faces. T... | 11/30/1993 |
| 5154395 | Ball valve and actuator for operating valves and the like In one aspect the invention relates to a ball valve of the type comprising a ball member (83, 85) provided with two axially displaceable sleeves (66A, 66B) adapted to be displaced outwards to sealing engagement against seats provided in the surrounding va... | 10/13/1992 |
| 5145150 | Valve with metal-to-metal sealing means A valve wherein a spherically shaped half ball element is arranged for rotation between open and closed positions with respect to a tubular seat element. Metal-to-metal sealing elements are disposed between the tubular seat and the valve body to develop a... | 09/08/1992 |
| 5137258 | Ball valve A ball valve having a spherical valve body which is rotarably mounted in a valve box and rotation of the spherical valve body controls a fluid to flow or stop. The spherical valve body provides sub-valve plates which may be pressed against valve seats so ... | 08/11/1992 |
| 5074525 | Hygienic stop valve A stop valve is disclosed which includes a means for venting fluid to the exterior of the valve housing if the valve is not properly adjusted, thereby providing a readily detectable visual indication that the valve needs to be readjusted or retightened. I... | 12/24/1991 |
| 5042529 | Structure of water flow regulating device A water flow regulating device which comprises a casing having a control chamber at the upper middle for holding a regulating valve and a division wall at the lower middle to block up the water outlet from the water inlet thereof. A teflon washer is set i... | 08/27/1991 |
| 5011115 | Self supporting plug for a double block and bleed plug valve Self supporting, non-lubricated retractable seal double block and bleed plug valve wherein an improved plug configuration provides direct bearing surface support for the plug along at least a portion of the radial surface of the plug. The remaining radial... | 04/30/1991 |
| 5005805 | Lift-turn valve and actuator assembly A lift-turn valve actuator is provided for tapered plug valve and slip assemblies that accomplishes vertical movement of the plug and retraction of the slips from sealing engagement with the valve body prior to rotation of the plug member 90° to its open... | 04/09/1991 |
| 4989641 | Rotary selector valve A multi-port valve internally supports a rotatable trunnion having an elbow passage between a nozzle portion of the trunnion and a lower end outlet that communicates with a test port of the valve body. The outer end of the nozzle has an axially reciprocab... | 02/05/1991 |
| 4940210 | Ball valve A new and improved valve apparatus and method of operating same that moves a flow closure assembly between open and closed positions with a minimum of frictional resistance while effecting a forcible engagement with both upstream and downstream valve seat... | 07/10/1990 |
| 4738431 | Ball valve structure Disclosed is an improved ball valve structure and a well safety valve utilizing the improved ball valve. The improved valve includes a metal seat member having a resilient section and control arms, which may be positioned to initially sealingly engage the... | 04/19/1988 |
| 4718444 | Valve seat retraction method and apparatus Selective retraction of a spring-biased valve seat from slidable sealing engagement with a ball valve member is effected by a threaded retraction tool inserted through a threaded retraction port normally sealed by a removable sealing screw and gasket. The... | 01/12/1988 |
| 4634098 | Ball Valve In a valve of the ball or globe type operating means are provided to cause movement of the closure member in an angular mode about an axis of rotation and in a radial direction with respect to such axis in order that the closure member may be removed from... | 01/06/1987 |
| 4623119 | Plug valve An improved plug-type valve of the type having a plug connected to slips wherein opening and closing the valve involves both vertical and rotational motion of the plug, the novel features of the invention residing in geometrical characteristics of plug, s... | 11/18/1986 |
| 4617957 | Rotary plug valve A rotary plug valve has a frusto-conical valve plug (4) received within a frusto-conical valve chamber with a tapered valve liner (3) being provided between the two. The chamber and the plug are oppositely tapered so that by axial movement of the plug the... | 10/21/1986 |
| 4617964 | Tight shut-off valve with flow control A flow control apparatus for use primarily in plug-type valves provides means for continuously varying the flow rate of fluid through the valve while using the same operator that is used to control the open and closed position of the valve. The invention ... | 10/21/1986 |
| 4597560 | Half-turn valve A plug valve assembly employs a stem having a threaded end, and a shiftable locking key to alternatively interengage the plug with either the stem or the bonnet. When the plug is locked to the bonnet by the key, the threaded part of the shaft will initial... | 07/01/1986 |
| 4580762 | Closure device for a liquid-carrying pipe The device comprises a body (1) provided with two coaxial circular openings (3, 4) for connecting two sections of pipe, wherein each opening has an oblique seat (5, 6) receiving a wedge formed of two counter-seats (9, 10), a spherical ball (11) and a cage... | 04/08/1986 |
| 4576360 | Floating disc butterfly valves This invention relates to a butterfly valve comprising a floating disc wherein the seating pressure between the valve seat and the rim of the floating disc is relieved prior to the rotation of the disc for opening and closing, and the seating pressure is ... | 03/18/1986 |
